Troy Lee Designs SE4 Polyacrylite Skully Helmet – Advanced Protection for Mountain Bikers

Engineered for aggressive trail riders and downhill enthusiasts, the SE4 Polyacrylite Skully Helmet combines cutting-edge safety with superior ventilation. At just 1500 grams, this MIPS-equipped helmet minimizes rotational impact forces during crashes, while 16 strategically placed intake vents and 6 rear exhaust ports ensure optimal airflow to keep you cool on demanding rides.

Key Features & Benefits

• MIPS Brain Protection – Reduces harmful rotational motion during angled impacts
• Lightweight EPP Chin Bar – Expanded PolyPropylene construction offers durability without added weight
• Precision Fit System – Three shell sizes accommodate different head shapes for enhanced comfort and safety
• Emergency-Ready Design – 3D-contoured cheek pads feature quick-release systems for first responders
• Breakaway Visor & Hardware – Plastic screws and brass inserts allow visor detachment upon impact
• Stainless Steel D-Rings – Secure, corrosion-resistant buckle system for reliable fastening

Why Riders Choose the SE4

Ideal for enduro racing and technical singletrack, this helmet prioritizes both protection and breathability. The anatomical fit reduces pressure points during long rides, while the included drawstring storage sock keeps your gear protected off-trail. Compared to standard MTB helmets, the SE4’s multi-density foam and rotational impact defense make it a top choice for riders seeking professional-grade safety.

Built for speed. Engineered for survival.